Locking-spindle door-latch



W. Hwy 757772557 L a 2 5% I 1719/2320. PM; fez/12272.30, A955;

AM- PHOTO-THO. 00. NY. (OSBORNE'S PROCESS) UNITED STATES WILLIAM H.MCNAMEE, OF PHILADELPHIA, PENNSYLVANIA.

LOCKING-SPINDLE DOOR-LATCH.

Specification of Letters Patent No. 12,320, dated anuary 30, 1 855.

To all whom itmay concern:

Be it known that I, WM. H. MCNAMEE, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented an Improvement inLocking-Spindle Latches; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis speci fication, in which Letter A is the form of latch, having aball 01 upon one end and a hammer b With an upright stem inclosed in aspiral wire upon the other end.

Letter B is a face plate having an opening 0 made in it to admit thehammer b of the latch to work in when applied upon the door. On theinner side of said face plate is a shelf piece d having through it ahole for the upright stem on the latch to Work in.

Letter C is a spindle made Wide between the ends, in that part thatcomes within the thickness of the door.

Letter 6 is a projecting arm on the spindle CZ Letter D is a fork shapedbolt.

Letter E is a knob escutcheon, having on its inner side andcircumference a rim f and on each side, i. 6., above and below the holefo-r'the spindle two guide pieces g.

The horizontal dotted lines denote the bored hole in the edge of thedoor.

The operation of said latch A is byinserting it in the bored hole. Thebored hole being of the diameter of the ball a upon the latch. The holebeing any depth, but sufficiently deep, leaving the end b a hammer ofthe latch protruding from the hole to make a catch. The face plate islet in flush on the edge of the door, passing the hammer 6 through thehole 0 and the upright stem upon the hammer, through the hole in theshelf piece 01. The spiral Wire pressing against the shelf piece, andupon the hammer offers a resistance to the raising of the latch, andthereby secures the latch in fastening. The spindle C being moved byknobs attached to them perform a rocking motion, and the said widenedpart of the spindle being placed immediately under and across the latch,by this motion presses the latch upward, z'. c. in that part that isfree, the end a of thelatch being confined in a hole as described. Theprojecting arm 6 on the spindle rests against the side of the door. Thefork part of the bolt D being across the arm. The handle or arm of thebolt being secured by a hole in the escutcheon rim. The escutcheon beingscrewed upon the door, performs in'locking the spindle.

Having described said latch with the im-- provements thereto what Iclaim and Wish to secure by Letters Patent is, viz

The guides g and the rim f of the escutcheon. The shelf d on the faceplate, and the upright stem inclosed with a spiral Wire working throughthe shelf piece, 03. The projecting arm e on the spindle, and the forkedbolt D. The whole combined for thepurpose of a latch and look as hereindescribed.

Philadelphia, December 26, 1854.

WM. H. MONAMEE.

WVitnesses:

JAMES S. WILSON, H. W. EVANS.

